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How long should an allergic reaction symptom to an antibiotic last for?

1 doctor weighed in
Dr. Barbara Stark Baxter
Internal Medicine - Allergy & Immunology

In brief: Antibiotic allergy

Antibiotic allergies can clear up in a day or last up to six months.
Fortunately, most resolve relatively quickly, over a few days. We do not yet know why some persist for a long time and require strong medications like oral steroids (e.g. Prednisone) in order to settle down.

In brief: Antibiotic allergy

Antibiotic allergies can clear up in a day or last up to six months.
Fortunately, most resolve relatively quickly, over a few days. We do not yet know why some persist for a long time and require strong medications like oral steroids (e.g. Prednisone) in order to settle down.
Dr. Barbara Stark Baxter
Dr. Barbara Stark Baxter
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